Kubunetes(Non-Clouds) Access cluster from outside(Public IP)
I want to make my own cluster, So I plan to buy 3 raspberry pi( for being as server) 1 for master node and 2 for worker nodes. I got one public Ip(router). And I will use kubeadm to create a master node. And use token to join master node from other 2 remaining ras-pi. All raspberry pi are in the same LAN ( router). Normally if I run webserver on my laptop on port 80. My laptop has 192.168.1.3 private Ip. And I do port forwarding from router to my laptop. I can access website through Public Ip.And if I run my webserver on container and do load balancing with k8s on 2 worker nodes( raspberry pi) So how can I handle it. Where should I do port forward to from my router. So how can I bring client from public ip to my any service in my own cluster. I research for it and I can use node port to access but I think it’s not good to do it because it access directly to a host machine not through cluster so another way is making my own loadbalancer but I don’t know How to do
So I want to get some advice how to do it or anything that to achieve my goal. I don’t care if it’s tough or difficult. I just want to success it to get some knowledge and publish it please can someone clarify me
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2 Answers
Use nginx ingress controller to route the calls to k8s services in the cluster. That way you don't have to use node port type service objects.
Please consider using of MetalLB (a load-balancer implementation for bare metal Kubernetes clusters) together with the NGINX Ingress controller.
It would require to setup port forwarding in your home router on ports (80/443) to one of your worker nodes.
Here is how this setup would look like in your case:
